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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Synchronous Compression operations
4 *
5 * Copyright 2015 LG Electronics Inc.
6 * Copyright (c) 2016, Intel Corporation
7 * Author: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
8 */
9#ifndef _CRYPTO_SCOMP_INT_H
10#define _CRYPTO_SCOMP_INT_H
11
12#include <crypto/algapi.h>
13
14#define SCOMP_SCRATCH_SIZE 131072
15
16struct crypto_scomp {
17 struct crypto_tfm base;
18};
19
20/**
21 * struct scomp_alg - synchronous compression algorithm
22 *
23 * @alloc_ctx: Function allocates algorithm specific context
24 * @free_ctx: Function frees context allocated with alloc_ctx
25 * @compress: Function performs a compress operation
26 * @decompress: Function performs a de-compress operation
27 * @base: Common crypto API algorithm data structure
28 */
29struct scomp_alg {
30 void *(*alloc_ctx)(struct crypto_scomp *tfm);
31 void (*free_ctx)(struct crypto_scomp *tfm, void *ctx);
32 int (*compress)(struct crypto_scomp *tfm, const u8 *src,
33 unsigned int slen, u8 *dst, unsigned int *dlen,
34 void *ctx);
35 int (*decompress)(struct crypto_scomp *tfm, const u8 *src,
36 unsigned int slen, u8 *dst, unsigned int *dlen,
37 void *ctx);
38 struct crypto_alg base;
39};
40
41static inline struct scomp_alg *__crypto_scomp_alg(struct crypto_alg *alg)
42{
43 return container_of(alg, struct scomp_alg, base);
44}
45
46static inline struct crypto_scomp *__crypto_scomp_tfm(struct crypto_tfm *tfm)
47{
48 return container_of(tfm, struct crypto_scomp, base);
49}
50
51static inline struct crypto_tfm *crypto_scomp_tfm(struct crypto_scomp *tfm)
52{
53 return &tfm->base;
54}
55
56static inline void crypto_free_scomp(struct crypto_scomp *tfm)
57{
58 crypto_destroy_tfm(tfm, crypto_scomp_tfm(tfm));
59}
60
61static inline struct scomp_alg *crypto_scomp_alg(struct crypto_scomp *tfm)
62{
63 return __crypto_scomp_alg(crypto_scomp_tfm(tfm)->__crt_alg);
64}
65
66static inline void *crypto_scomp_alloc_ctx(struct crypto_scomp *tfm)
67{
68 return crypto_scomp_alg(tfm)->alloc_ctx(tfm);
69}
70
71static inline void crypto_scomp_free_ctx(struct crypto_scomp *tfm,
72 void *ctx)
73{
74 return crypto_scomp_alg(tfm)->free_ctx(tfm, ctx);
75}
76
77static inline int crypto_scomp_compress(struct crypto_scomp *tfm,
78 const u8 *src, unsigned int slen,
79 u8 *dst, unsigned int *dlen, void *ctx)
80{
81 return crypto_scomp_alg(tfm)->compress(tfm, src, slen, dst, dlen, ctx);
82}
83
84static inline int crypto_scomp_decompress(struct crypto_scomp *tfm,
85 const u8 *src, unsigned int slen,
86 u8 *dst, unsigned int *dlen,
87 void *ctx)
88{
89 return crypto_scomp_alg(tfm)->decompress(tfm, src, slen, dst, dlen,
90 ctx);
91}
92
93int crypto_init_scomp_ops_async(struct crypto_tfm *tfm);
94struct acomp_req *crypto_acomp_scomp_alloc_ctx(struct acomp_req *req);
95void crypto_acomp_scomp_free_ctx(struct acomp_req *req);
96
97/**
98 * crypto_register_scomp() -- Register synchronous compression algorithm
99 *
100 * Function registers an implementation of a synchronous
101 * compression algorithm
102 *
103 * @alg: algorithm definition
104 *
105 * Return: zero on success; error code in case of error
106 */
107int crypto_register_scomp(struct scomp_alg *alg);
108
109/**
110 * crypto_unregister_scomp() -- Unregister synchronous compression algorithm
111 *
112 * Function unregisters an implementation of a synchronous
113 * compression algorithm
114 *
115 * @alg: algorithm definition
116 */
117void crypto_unregister_scomp(struct scomp_alg *alg);
118
119int crypto_register_scomps(struct scomp_alg *algs, int count);
120void crypto_unregister_scomps(struct scomp_alg *algs, int count);
121
122#endif
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Synchronous Compression operations
4 *
5 * Copyright 2015 LG Electronics Inc.
6 * Copyright (c) 2016, Intel Corporation
7 * Author: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
8 */
9#ifndef _CRYPTO_SCOMP_INT_H
10#define _CRYPTO_SCOMP_INT_H
11
12#include <crypto/acompress.h>
13#include <crypto/algapi.h>
14
15#define SCOMP_SCRATCH_SIZE 131072
16
17struct acomp_req;
18
19struct crypto_scomp {
20 struct crypto_tfm base;
21};
22
23/**
24 * struct scomp_alg - synchronous compression algorithm
25 *
26 * @alloc_ctx: Function allocates algorithm specific context
27 * @free_ctx: Function frees context allocated with alloc_ctx
28 * @compress: Function performs a compress operation
29 * @decompress: Function performs a de-compress operation
30 * @base: Common crypto API algorithm data structure
31 * @calg: Cmonn algorithm data structure shared with acomp
32 */
33struct scomp_alg {
34 void *(*alloc_ctx)(struct crypto_scomp *tfm);
35 void (*free_ctx)(struct crypto_scomp *tfm, void *ctx);
36 int (*compress)(struct crypto_scomp *tfm, const u8 *src,
37 unsigned int slen, u8 *dst, unsigned int *dlen,
38 void *ctx);
39 int (*decompress)(struct crypto_scomp *tfm, const u8 *src,
40 unsigned int slen, u8 *dst, unsigned int *dlen,
41 void *ctx);
42
43 union {
44 struct COMP_ALG_COMMON;
45 struct comp_alg_common calg;
46 };
47};
48
49static inline struct scomp_alg *__crypto_scomp_alg(struct crypto_alg *alg)
50{
51 return container_of(alg, struct scomp_alg, base);
52}
53
54static inline struct crypto_scomp *__crypto_scomp_tfm(struct crypto_tfm *tfm)
55{
56 return container_of(tfm, struct crypto_scomp, base);
57}
58
59static inline struct crypto_tfm *crypto_scomp_tfm(struct crypto_scomp *tfm)
60{
61 return &tfm->base;
62}
63
64static inline void crypto_free_scomp(struct crypto_scomp *tfm)
65{
66 crypto_destroy_tfm(tfm, crypto_scomp_tfm(tfm));
67}
68
69static inline struct scomp_alg *crypto_scomp_alg(struct crypto_scomp *tfm)
70{
71 return __crypto_scomp_alg(crypto_scomp_tfm(tfm)->__crt_alg);
72}
73
74static inline void *crypto_scomp_alloc_ctx(struct crypto_scomp *tfm)
75{
76 return crypto_scomp_alg(tfm)->alloc_ctx(tfm);
77}
78
79static inline void crypto_scomp_free_ctx(struct crypto_scomp *tfm,
80 void *ctx)
81{
82 return crypto_scomp_alg(tfm)->free_ctx(tfm, ctx);
83}
84
85static inline int crypto_scomp_compress(struct crypto_scomp *tfm,
86 const u8 *src, unsigned int slen,
87 u8 *dst, unsigned int *dlen, void *ctx)
88{
89 return crypto_scomp_alg(tfm)->compress(tfm, src, slen, dst, dlen, ctx);
90}
91
92static inline int crypto_scomp_decompress(struct crypto_scomp *tfm,
93 const u8 *src, unsigned int slen,
94 u8 *dst, unsigned int *dlen,
95 void *ctx)
96{
97 return crypto_scomp_alg(tfm)->decompress(tfm, src, slen, dst, dlen,
98 ctx);
99}
100
101/**
102 * crypto_register_scomp() -- Register synchronous compression algorithm
103 *
104 * Function registers an implementation of a synchronous
105 * compression algorithm
106 *
107 * @alg: algorithm definition
108 *
109 * Return: zero on success; error code in case of error
110 */
111int crypto_register_scomp(struct scomp_alg *alg);
112
113/**
114 * crypto_unregister_scomp() -- Unregister synchronous compression algorithm
115 *
116 * Function unregisters an implementation of a synchronous
117 * compression algorithm
118 *
119 * @alg: algorithm definition
120 */
121void crypto_unregister_scomp(struct scomp_alg *alg);
122
123int crypto_register_scomps(struct scomp_alg *algs, int count);
124void crypto_unregister_scomps(struct scomp_alg *algs, int count);
125
126#endif